Children, because of having an immature immune system, are usually more prone than the adults to the microbial infections and have more severe symptoms, which is especially true for the newborns, and very young children. However, the review of clinical data from the current COVID-19 pandemic indicates otherwise. We discuss here what are the main features and components of children's immune system, the role of maternal transmission of immunity, and what are the possible explanations for the seemingly lower infection rate and severity of COVI-19 in children.

中文翻译：

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在COVID-19大流行中发展儿童免疫力。

儿童由于免疫系统不成熟，通常比成年人更容易受到微生物感染，并且症状更严重，这对于新生儿和非常小的孩子尤其如此。但是，对当前COVID-19大流行的临床数据的回顾表明并非如此。我们在这里讨论儿童免疫系统的主要特征和组成是什么，母体免疫力的传递作用，以及对儿童看似较低的COVI-19感染率和严重性的可能解释。